feat(emacs/lean-company): replace ?M in AC candidate with M and colorize
feat(emacs/lean-company): replace ?M in AC candidate with M and colorize

close #149

javra/lean,soonhokong/lean,johoelzl/lean,Kha/lean,soonhokong/lean,eigengrau/lean,fpvandoorn/lean2,htzh/lean,dselsam/lean,dselsam/lean,rlewis1988/lean,fpvandoorn/lean2,avigad/lean,dselsam/lean,leanprover/lean,leanprover-community/lean,digama0/lean,johoelzl/lean,fgdorais/lean,Kha/lean,Kha/lean,fpvandoorn/lean,rlewis1988/lean,leodemoura/lean,digama0/lean,soonhokong/lean-windows,soonhokong/lean-osx,sp3ctum/lean,fgdorais/lean,sp3ctum/lean,rlewis1988/lean,soonhokong/lean-windows,rlewis1988/lean,Kha/lean,soonhokong/lean,fpvandoorn/lean2,soonhokong/lean,johoelzl/lean,soonhokong/lean-windows,dselsam/lean,sp3ctum/lean,levnach/lean,digama0/lean,htzh/lean,johoelzl/lean,johoelzl/lean,fgdorais/lean,avigad/lean,leanprover/lean,avigad/lean,fgdorais/lean,UlrikBuchholtz/lean,c-cube/lean,digama0/lean,UlrikBuchholtz/lean,leanprover/lean,fpvandoorn/lean,leanprover-community/lean,leodemoura/lean,leanprover-community/lean,avigad/lean,leodemoura/lean,avigad/lean,soonhokong/lean-windows,htzh/lean,Kha/lean,fpvandoorn/lean2,javra/lean,javra/lean,soonhokong/lean-windows,levnach/lean,soonhokong/lean,rlewis1988/lean,johoelzl/lean,soonhokong/lean-osx,htzh/lean,javra/lean,fgdorais/lean,fpvandoorn/lean,htzh/lean,avigad/lean,digama0/lean,c-cube/lean,soonhokong/lean-osx,digama0/lean,leanprover-community/lean,leanprover-community/lean,fpvandoorn/lean,dselsam/lean,fpvandoorn/lean2,UlrikBuchholtz/lean,eigengrau/lean,eigengrau/lean,soonhokong/lean-osx,levnach/lean,dselsam/lean,fpvandoorn/lean,c-cube/lean,levnach/lean,fgdorais/lean,leodemoura/lean,sp3ctum/lean,leanprover/lean,fpvandoorn/lean,Kha/lean,c-cube/lean,leanprover/lean,UlrikBuchholtz/lean,levnach/lean,c-cube/lean,leodemoura/lean,UlrikBuchholtz/lean,javra/lean,soonhokong/lean-osx,leanprover-community/lean,rlewis1988/lean,sp3ctum/lean,eigengrau/lean,leanprover/lean,eigengrau/lean,leodemoura/lean